Morphology control and photoluminescence of BaMgAl10O17:Eu2+, Mn2+ phosphors prepared by flux method

The blue phosphor Ba0.9Mg0.98Al10O17: 0.1Eu(2+), 0.02Mn(2+) (BAM:Eu2+, Mn2+) was prepared by flux assisted solid-state reaction method. The effects of (NH4)(2)CO3 and LiF on the morphology and luminescent properties were studied. The usually obtained BAM:Eu2+. Mn2+ particles had hexagonal shape. We found that the thickness of the particle was affected by the amount of LiF and spherical-like particles can be obtained. The significant change on morphology from plate-like to spherical-like shape led to a highly enhanced luminescence of BAM:Eu2+, Mn2+. The maximum luminance intensity of prepared samples was 108% in comparison with the commercial BAM:Eu2+. Mn2+ under UV excitation. (C) 2011 Elsevier B.V. All rights reserved.